An Open-Source JavaScript Library for Mobile-Friendly Interactive Maps

learn more… | top users | synonyms

2
votes
1answer
164 views

Is it necessary to add Tile layer background?

Is it necessary to add tile layer for making a GeoJSON data rendered in web browser using Leaflet or any other API ? I have a geoJSON data (I obtained the GeoJSON data by converting .shp file to ...
2
votes
2answers
1k views

Animated lines and line styles in Javascript

I'm using Leaflet library and Mapbox. I need to create animated line from one city to another, slow motion "travelling" from one point to another point. Is that possible in javascript and how? I can ...
2
votes
1answer
32 views

Viewing map tiles generated from Maperitive in leaflet or openlayers

for few days i have been working on developing my own osm tile server. I tried it on linux as well as on windows, no complete success till now. I Have to make tile server on both windows and linux. ...
2
votes
1answer
76 views

Leaflet snap circle draw to marker

I am looking for ideas/libraries that enable snapping when I create a circle with leaflet draw. There is the libaray Leaflet snap, that enables snapping of draggable markers to polylines and other ...
2
votes
1answer
124 views

Cache geodjango query with bounding box filter

Im using geodjango (postgis) to retrieve points contained inside a bounding box (made by leafletjs), it works so nice, but now I want to cache this query. A tipical query is one like this: ...
2
votes
2answers
160 views

where to host private cartodb/leaflet web app

I am looking for opinions on where to host my cartodb/leaflet map site. It needs to be private with authorized users and have a document management system. So, I was thinking sharepoint online 2013 so ...
2
votes
1answer
245 views

Options for getting data from SQL Server into Leaflet app?

I have polygon data in SQL Server 2012 that I need to get onto a Leaflet application - we're not talking thousands of polygons, but simplified U.S. counties where only one state will be displayed at a ...
2
votes
1answer
330 views

Programmatic conversion between GML and GeoJSON

I am modifying a .Net (C#, MSSQL) system to add some geography that I'd like to display on a leaflet map. I had originally expected to save GeoJSON directly into text strings in the DB, but after ...
2
votes
2answers
277 views

Can Geoserver return the raster value of a lat/lon point

I have a GeoTIFF published by Geoserver 2.2 and being used by Leaflet via WMS. How can I get Geoserver to return the raster value at a lat/long point? I'm guessing it has to do with using WCS, but ...
2
votes
1answer
1k views

Leaflet - how can I call custom js after drawing polygon?

I want to draw a polygon on a leaflet map and afterwards send it to the DB and retrieve all objects that intersect that polygon. In Openlayers I did it by using custom function in "featureAdded:" ...
2
votes
1answer
500 views

formatting geojson from postgis data using node.js

I am trying to build a GeoJSON object from a SQL query to some GIS point data in a postgis postgresql database. A snippet of my node.js app.js is below. As it stands I understand building the type ...
2
votes
1answer
1k views

How to setup leaflet map to display a WMS layer in ESRI:102012 projection?

I have a WMS server that serves layers in ESRI:102012 projection. http://spatialreference.org/ref/esri/102012/ It accepts GetMap requests with srs=EPSG:102012 parameter. My goal is to display a map ...
2
votes
1answer
774 views

LEAFLET - store and retrieve user markers & diagrams from database

I am intending to use leaflet in order to build a "microscope laboratory" for my institute's medical school. I am quite new to javascript, ajax and json technologies so I would like to have some ...
2
votes
1answer
22 views

Make Leaflet Map Background Transparent

How can i make the background of the leaflet map transparent. I see opacity controls from the layers, but not the map background. Should the be changed just with plain CSS? Thanks
2
votes
1answer
276 views

OpenLayers3 vs Leaflet for styling multifeature geojson

I'm experimenting with various options for displaying geographic information to the public in html format. The ultimate aim is to build an online application where anyone can add the route they cycle ...
2
votes
1answer
391 views

Make sidebar div active on Marker click (and vice versa)?

What's the best way to change an element to active when you click on a marker. For example, when you click on a marker on a Leaflet map, how to make it so the sidebar element that's related to it ...
2
votes
3answers
90 views

Start-Marker from geojson polyline

i have a map with some walking- and bike-routes and popups with a few details and a picture. Now i want to set a marker on the first vertex of a geojson polyline, but i cant find out how. Btw. i´m ...
2
votes
1answer
321 views

Viewing map tiles from Maperitive in leaflet or openlayers

I generated tiles in Maperative. Created following html file: <html> <head> <meta charset="utf-8" /> <link rel="stylesheet" href="leaflet/leaflet.css" /> ...
2
votes
1answer
114 views

Leaflet.js and CartoDB.js event conflict

Little problem here. I’ve got a layer from a CartoDB viz that I’m listening to the featureclick event. When a feature is clicked I highlight it by applying cartoCss. However, I want to unhighlight it ...
2
votes
1answer
130 views

Super large scale maps with Leaflet, how?

I have a map/architectural drawing of two floors of a huge building with a lot of rooms. Now I'd like to make an interactive slippy map using preferably Leaflet showing all the rooms and use ...
2
votes
1answer
338 views

How do I set the fillcolor of polygons in Leaflet.js dynamically?

I'm using the interactive chloropath example for leaflet.js I figured out how to make each of my polygons add a running tally of values to the bottom of the page after each polygon is clicked. Upon ...
2
votes
1answer
122 views

How to control the order of appearance of markers using leaflet?

I'm plotting out markers from GeoJSON files onto my Leaflet map. Some of these markers overlap so now I want to control the order of appearance of these markers so that one type always sits above the ...
2
votes
2answers
534 views

Can I use leaflet to access a WMS service published as an OpenLayers javascript API?

I would like to add this layer to a site I'm working on that uses leaflet: http://116.240.195.134/vicmapapi/UserGuide.jsp The API itself is a javascript file based on OpenLayers: ...
2
votes
1answer
96 views

advice on browsing multiple points with leaflet - query only the points in the viewport

This a very basic question, but I don´t quite know where to start I have a postgis table with aproximately 15.000 points hosted on CartoDB And I'm developing an application that should let the user ...
2
votes
1answer
882 views

display a choropleth map using D3 and Leaftlet

I am trying to get a leaflet map to display a choropleth map using d3. I have written this code using samples I have found however the map just displays as the black fill, not the color classes I ...
2
votes
2answers
632 views

How to determine intersection between geojson feature and given coordinates?

I'm overlaying a leaflet map with features of geojson, fetched with d3 and added as SVG elements to the DOM. My geojson contains too many features to render at once, so my goal is to add to the map ...
2
votes
1answer
144 views

Value at a particular spot on Geoserver Heatmap

Geoserver is drawing from a PostGIS database to generate a heatmap using this SLD extension. Leaflet then overlays the heatmap over the base layer. Question: How can you determine the value at a ...
2
votes
1answer
1k views

select two markers & draw line between them in leaflet

I am very much new to leaflet. I have multiple markers plotted on my map in leaflet. now I have to draw line between two markers when I select them. Can any one help in doing this.
2
votes
1answer
296 views

How to create a radius search in Leaflet

My objective is to create a radius search tools using Leaflet API. It will behave like how many POIs within the radius from a given point. Any tutorial or any blog forum link will be helpful to me. ...
2
votes
1answer
553 views

How to render points from CartoDB with Leaflet and Leaflet Vector Layers?

I have a table in CartoDB containing some points. I want to render these points dynamically with Leaflet. There is cartodb.js for such tasks, but it does not support full customization of Tooltips, as ...
2
votes
1answer
602 views

How to preload tiles in Leaflet?

I'm trying to make a user controlled cross-layer animation in Leaflet. I have about 70 tileLayer.wms layers, that need to be preloaded on the map before animation can run. The question is - is there ...
2
votes
2answers
4k views

How do I overlay a KML on leaflet 0.4.4

I am using Leaflet 0.4.4, I have a KML I would like to overlay on the map, how do I go about doing this? Edit: I am already aware of https://github.com/CloudMade/Leaflet/issues/14, which directs ...
2
votes
2answers
757 views

Leaflet, defining a specific region for a canvas to draw upon

Using leaflet, you can draw on a given map by adding a Canvas layer. Some instructions are given here, http://leaflet.cloudmade.com/reference.html#tilelayer-canvas var canvasTiles = new ...
2
votes
0answers
11 views

How do I change polygon opacity using a esri WFS in leaflet?

Note...Solved and here for anyone having this problem...damn simple problem, I had not used a higher case character for fillcolor and fillopacity....they should be fillColor and fillOpacity , it ...
2
votes
1answer
19 views

Is it possible to use two layer.bindPopup functions in Leaflet

I have two different layers in a leaflet map. I have one layer in which I would like the popup to return some text from the layer's attributes. They other layer I would like the popup to return an ...
2
votes
0answers
84 views

Z-Index in GeoJSON features using leaflet

I have a watershed polygon with sub-watersheds contained within the larger watershed. I would like the sub-watersheds drawn on top. Can i control the drawing order of features within a geojson object ...
2
votes
0answers
45 views

LeafletJS animated marker with video

I have used the leaflet.animatedmarker from openplans on GitHub to create a marker that moves along a line. I also have added a video that will popup above the line. This plays fine with the marker ...
2
votes
0answers
46 views

Leaflet Marker Dragend Bug/Difficulty

I am having a problem with leaflet markers. The problem is that when I drag a marker with a lower z-index under another marker with a higher z-index and let it go, it makes another marker. I have a ...
2
votes
0answers
85 views

Leaflet Drag and drop to change existing markers

I'm working on a project where the user should be able to drag an image to a pre-existing marker and have the marker update color if the value of the marker (a value w/in the geojson) and image (a ...
2
votes
1answer
161 views

Large loads geojson from mysql to leaflet?

I have a mysql database with +25K rows including geometry and other attributes. Using a mysql2geojson php script I then added it to a leaflet map. It is super slow now, what can I do to boost the ...
2
votes
1answer
78 views

How does one use leaflet layergroups with CartoDB layers?

I'm trying to use leaflet layergroups with a cartodb layer, ala: http://leafletjs.com/reference.html#layergroup but haven't been able to successfully do it. This is what I have so far: var map = ...
2
votes
1answer
56 views

Integrate Leaflet map into PDF

I am current in the process of writing a thesis. Being in the field of GIS it obviously involves some maps ;). While the whole world switched to interactive online maps, Universities still require to ...
2
votes
1answer
175 views

Leaflet center Marker AND Popup on Map viewport

I want center my marker on popup open.. and centering map not in marker latlng, but on center of marker and popup! The problem is that popup has dinamic content(loaded on click). The map size is full ...
2
votes
0answers
83 views

Load Leaflet map in canvas element

I am working with leaflet tiles loading tiles to a map div http://jsfiddle.net/tBCd5/ I am now playing with some html5 canvas distortions like below http://jsfiddle.net/UF4PK/ It would be cool to ...
2
votes
0answers
400 views

How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane?

I have SVG on top of GeoJSON in my map. How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane while keeping GeoJSON in place in the leaflet-overlay-pane? (For example, how could ...
2
votes
1answer
144 views

How to get data from TileMill tileLayer properties in Mapbox for click/hover

I've successfully used Leaflet to load a geoJSON polygon-shapefile with data, and added click and hover interactivity to the layer. For a large dataset, I switched to mapbox.js 1.6.1, used TileMill to ...
2
votes
0answers
108 views

How to add an offset to a GeoJSON layer in Leaflet?

Using the example GeoJSON tutorial code at leafletjs.com. Change the myLines variable so that the two lines overlap, but run in opposite directions as follows: var myLines = [{ "type": ...
2
votes
0answers
76 views

QGIS 2.0 How to copy the color styling to a color column in a layer's attribute table

I have a polygon layer in QGIS that I have applied a random color style to each polygon. Under Layer Properties -> Style I selected a Categorized style and then generated a random color ramp. I added ...
2
votes
1answer
60 views

Why aren't my basemap tiles showing up via ArcGIS Server

I have a leaflet js script referencing the ArcGIS server imagery api. The code worked fine up until about two days ago. Now when I click on the layer there's a gray background. I am using my local ...
2
votes
0answers
116 views

Leaflet wms offset on zoom out

I have Leaflet map with base layer (epsg4326) and wms layer of gps point (also epsg4326). I've noticed when I zoom out , the gps point offset to the left. Any idea why it happens ? Here you can see ...